And weren't, when you got right down to it, particularly evil. Human beings mostly aren't. They just get carried away by new ideas, like dressing up in jackboots and shooting people, or dressing up in white sheets and lynching people, or dressing up in tie-dye jeans and and playing guitar at people. Offer people a new creed with a costume and their hearts and minds will follow.
Neil GaimanAll fiction is a process of imagining: whatever you write, in whatever genre or medium, your task is to make things up convincingly and interestingly and new.
Neil Gaiman